Django: Unable to configure handler 'console'

Question

I have a simple logging definition in the settings.py file:

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'simple': {
            'format': '[%(asctime)s] %(levelname)s %(message)s',
        },
        'verbose': {
            'format': '[%(asctime)s] %(levelname)s [%(name)s.%(funcName)s:%(lineno)d] %(message)s',
        },
    },
    'handlers': {
        'console': {
            'level': 'DEBUG',
            'class': 'logging.StreamHandler',
            'formatters': 'simple',
            'propagate': False
        }
    },
    'loggers': {
        'myapp': {
            'handlers': ['console'],
            'level': 'DEBUG'
         },
    }
}

When I run my program, I get the error:

ValueError: Unable to configure handler 'console'

What is going wrong?

Answer 1

propagate is not an option for handlers but for loggers. So your configuration should be.

'handlers': {
    'console': {
        'level': 'DEBUG',
        'class': 'logging.StreamHandler',
        'formatter': 'simple',
    }
},
'loggers': {
    'myapp': {
        'handlers': ['console'],
        'level': 'DEBUG',
        'propagate': False
     },
}

Answer 2

I changed and tested your LOGGING dictionary bit by bit, the following version works

{
'version': 1,
'disable_existing_loggers': False,
'formatters': {
    'simple': {
        'format': '[%(asctime)s] %(levelname)s %(message)s',
    },
    'verbose': {
        'format': '[%(asctime)s] %(levelname)s [%(name)s.%(funcName)s:%(lineno)d] %(message)s',
    },
},
'handlers': {
    'console': {
        'level': 'DEBUG',
        'class': 'logging.StreamHandler',
        'formatter': 'simple',
    }
},
'loggers': {
    '': {
        'handlers': ['console'],
        'level': 'DEBUG',
        "propagate": True
     },
}

}

There are three differences between LOGGING and the above dictionary:

1. In LOGGING, there is a key value pair 'propagate': False in LOGGING.handlers.console. It was removed in the above dictionary
2. In LOGGING.loggers, the unique key is 'myapp'. In the above dictionary, the 'myapp' is replaced by an empty string ''
3. In LOGGING.loggers, there is a key value pair "propagate": False in the unique sub dictionary. It was replaced by "propagate": True.

Hope it helps.